This is the second fire at this address this
year, both at similar times of the day / night so it is reasonable
to guess that minds would be alert to all the possibilities.

Note that all the circumstances are recorded and that an additional
note is made of any other features that seem relevant including
the ownership details.

When the fire was out, two firemen remained on duty overnight.
This could have the dual purpose of ensuring there was no reoccurrence
of the fire and supervising who had entry to the premises as well
as preserving any evidence.